1. ”…and they are really lying” Clean Evidence on the Pervasiveness of Cheating in Professional Contexts from a Field Experiment”, Journal of Economic Psychology. Vol.48, 2015, S.48-59 (mit B.M. Djawadi).

9. The Promise of Workplace Training for Non-College-Bound Youth: Theory and Evidence from German Apprenticeship, CEP Diskussionspapier Nr. 528, London School of Economics, Februar 2002 (mit D. Clark).